Classic form validation

I'm using a classic form and placing via javascript. In order to keep my clients on my site I handled validation via jquery with form validation. It was working fine for a few months but is now broken. Has something changed on your end to prevent handling validation from my side?

Sorry for the delay in getting back to you. The form itself is working fine but the validation isn't working. So if you don't enter an email address and hit submit there should be an error on the form on our page - instead the page redirects to the Emma site and then displays the error. Before the validation worked to stay on our page/form but now submits regardless.

Hey there, sorry for the delay in getting back to you. There isn't anything on our end that would be getting in the way of your validation, but as it's not something that's a part of our form, we wouldn't be able to be much help.

I did just try to sign up with an invalidly (is that a word?) formatted address and it blocked me, so perhaps you've got it worked out!